Edelbrock models 1405 versus 1406 carburetors

On another board I'm reading about people having great success simply going to a stock 1405 set up with 1428 (.100) jets and 1451 Rods. Also stepping up to orange springs. I'm about to put a 1406 on my 73 charger so now a bit confused. I think I might start it at #23 and then maybe play with #19. Doing the 1405 set up doesn't put you anywhere on the 1406 chart let alone in the shaded area. Sounds risky. Does the fact that I'm deleted an EGR change anything in the calculations of tuning the carb??

Thanks!